juul2                  package:ISwR                  R Documentation

_J_u_u_l'_s _I_G_F _d_a_t_a, _e_x_t_e_n_d_e_d _v_e_r_s_i_o_n

_D_e_s_c_r_i_p_t_i_o_n:

     The 'juul2' data frame has 1339 rows and 8 columns. Extended
     version of |juul|.

_F_o_r_m_a_t:

     This data frame contains the following columns:

     _a_g_e a numeric vector (years).

     _h_e_i_g_h_t a numeric vector (cm).

     _m_e_n_a_r_c_h_e a numeric vector. Has menarche occurred (code 1: no, 2:
          yes)?

     _s_e_x a numeric vector (1: boy, 2: girl).

     _i_g_f_1 a numeric vector. Insulin-like growth factor ($mu$g/l).

     _t_a_n_n_e_r a numeric vector. Codes 1-5: Stages of puberty a.m. Tanner.

     _t_e_s_t_v_o_l a numeric vector. Testicular volume (ml).

     _w_e_i_g_h_t a numeric vector. Weight (kg).

_S_o_u_r_c_e:

     Original data.

_E_x_a_m_p_l_e_s:

     data(juul2)
     plot(igf1~age, data=juul2)

